Electrostatic Relativistic Fluid Models of Electron Emission in a Warm Diode

Journal Article · 06 July 2022 · IEEE International Conference on Plasma Science (ICOPS)

DOI:https://doi.org/10.1109/icops45751.2022.9813152· OSTI ID:1882612

Hamlin, Nathaniel D. ^[1]; Smith, Thomas M. ^[1]; Roberds, Nicholas ^[1]; Glines, Forrest ^[1]; Beckwith, Kristian ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

A semi-analytic fluid model has been developed for characterizing relativistic electron emission across a warm diode gap. Here we demonstrate the use of this model in (i) verifying multi-fluid codes in modeling compressible relativistic electron flows (the EMPIRE-Fluid code is used as an example; see also Ref. 1), (ii) elucidating key physics mechanisms characterizing the influence of compressibility and relativistic injection speed of the electron flow, and (iii) characterizing the regimes over which a fluid model recovers physically reasonable solutions.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: NA0003525
• OSTI ID: 1882612
• Report Number(s): SAND2022-10160J; 708667
• Journal Information: IEEE International Conference on Plasma Science (ICOPS), Journal Name: IEEE International Conference on Plasma Science (ICOPS) Vol. 2022; ISSN 2576-7208; ISSN 0730-9244
• Publisher: IEEE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
codes
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electron emission
electrostatics
fluids
physics
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